unable to unlock 3310

[ralph25]

i have a good one!!
when i try to unlock my nokia 3310 it says : sim not locked!!
but if i want to change the simcard it says wrong simcard!!!
hows that possible???

[browntoa]

did you enter 2 codes ??

some networks have a GID1 as well which generates a second code to enter, you may need to enter this even though the first says sim not locked